Robust shifting control of a motor‐transmission integrated system considering anti‐jerking and speed regulation for electric vehicles. Issue 1 (9th October 2018)

• Record Type: Journal Article
• Authors: Chai, Benben; Zhang, Jianwu; Wu, Shaofang
• Is Part Of: IET intelligent transport systems. Volume 13:Issue 1(2019)
• Page Start: 141
• Page End: 152
• Publication Date: 2018-10-09
• Subjects: traction motor drives -- electric vehicles -- robust control -- angular velocity control -- vibration control -- torque control -- control system synthesis -- power transmission (mechanical) -- synchronisation -- energy conservation -- dynamic programming -- machine control; robust shifting control -- motor‐transmission integrated system -- anti jerking robust controller -- unsatisfied speed regulation -- electric vehicles -- electric drive system -- directly coupled traction motor -- two‐speed transmission -- energy efficiency improvement -- motor size reduction -- control hierarchy -- electric powertrain -- optimal shift schedule -- driving cycles -- torque control -- speed control -- robust shift process control -- energy‐saving shift schedule -- driveline oscillation -- vibration attenuation -- robust speed controller -- speed synchronisation capability -- dynamic programming methods; Intelligent transportation systems -- Periodicals; Electronics in transportation -- Periodicals; 388.31205
• DOI: 10.1049/iet-its.2018.5057
• Languages: English
• ISSNs: 1751-956X

Abstract

Abstract : Electric drive system with directly coupled traction motor and two‐speed transmission is a good choice for electric vehicles because of the potential in energy efficiency improvement and motor size reduction. Here, a control hierarchy of the electric powertrain has been applied, which comprises an optimal shift schedule at entire driving cycles as well as torque and speed control of the traction motor at the certain shift process. Firstly, the energy‐saving shift schedule is investigated by dynamic programming methods. Then, bench tests of the integrated motor‐transmission system are conducted. The oscillation of driveline and unsatisfied speed regulation of the traction motor are observed in the experiment results, which will deteriorate the shift performance. Therefore, an anti‐jerking robust controller is designed to attenuate the vibration of the powertrain and a robust speed controller is proposed to enhance the speed synchronisation capability of the traction motor. Simulation results indicate that the obtained shift schedule is effective to improve the energy efficiency and the robust shift process control can enhance the drive ability.